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Personally - I would be VERY wary of trying to retrofit threading. There are many big scary bugs that are lurking within to bite you. I would strongly recommend that you assume you'll need a rewrite from scratch, and then borrow from your original source.

It at least looks like you're dealing with an implicitly parallel problem, so I would suggest:

  • Redraft your code such that you have a 'worker' subroutine, which handles one thing at a time. (Multiple are OK, if you've different cases to handle and you want to parallelise)
  • Use Thread::Queue, and 'feed' your worker with a queue. (unthreaded).
  • Consider your 'worker' sub as a thread, and spawn multiple

Here's a really basic template for what I mean: A basic 'worker' threading example.

(Not to denigrate the perfectly sound advice other Monks have offered. This is purely my opinion as to how I would approach your problem)


In reply to Re: Adding parallel processing to a working Perl script by Preceptor
in thread Adding parallel processing to a working Perl script by Jim

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